# IP Intelligence Briefing: 31.17.253.3/32
Classification: Defensive Intelligence Assessment
Date: July 23, 2026
Subject: 31.17.253.3
## Executive Summary
Target IP 31.17.253.3 presents a low-risk profile with a risk score of 0 and no active threat indicators. The address operates as a residential mobile endpoint on Vodafone infrastructure with no open services detected. No firewall blocking or mitigation actions were recommended based on current risk assessment.
## Network Ownership and Registration
The address belongs to ASN 3209 (Kabel Deutschland RIPE) within the 31.16.0.0/15 CIDR block registered with RIR RIPE. Organization name: Kabel Deutschland RIPE. Network designation: KABEL-DEUTSCHLAND-CUSTOMER-SERVICES-24. Abuse contact information is available via RDAP.
## Geolocation Analysis
Geolocation data exhibits inconsistency across multiple sources. Primary profile indicates United States (New York) with two geolocation sources showing non-consensus positioning. Historical signals from July 23, 2026, show conflicting geographic indicators:
- Germany (Berlin): confidence 0.95
- Germany (Bremen): confidence 0.70
- Germany (general): confidence 0.52
Mobile carrier attribution identifies Vodafone GmbH (MCC 262, MNC 02), with LTE/5G technology classification. The inconsistency between US assignment and German mobile carrier suggests potential geolocation database discrepancies or mobile roaming activity.
## Threat Intelligence Assessment
Threat indicators returned empty with zero abuse confidence score. The IP is not flagged as a known attacker, spam source, or Tor exit node. Blacklist count: 0. No known campaigns correlated. Pulsedive risk assessment unavailable. Control plane analysis shows 8 DNSBL lists referenced but zero listings, with operator score of 0.2609 (Basic classification).
## Network Classification and Services
Classification flags show the IP is not a provider, CDN, VPN, proxy, hosting service, or cloud infrastructure. Service purpose listed as "Firewalled / No Services." No open ports detected. TLS certificate, HTTP banner, and server banner data absent. DNS reverse resolution confirmed to ip1f11fd03.dynamic.kabel-deutschland.de with forward resolution confirmed. No SPF, DMARC, or TXT records present.
## Neighborhood Analysis
Subnet 31.17.253.0/24 contains 2 neighboring IPs with the following risk profiles:
- 31.17.253.2: Risk score 25, authority score 60
- 31.17.253.249: Risk score 15, authority score 60
Subnet abuse density: 0. No high-risk or medium-risk neighbors identified. Classification inherited from subnet: 0.
## Historical Observations
Fifteen signals recorded during observation period. Most recent signals (July 23, 2026) confirm organizational affiliation with Kabel Deutschland RIPE and ASN 3209. Signal confidence levels range from 0.52 to 0.95. No persistent malicious behavior observed. Threat persistence days: 0. Threat observation count: 0.
## Relationship Graph
Four relationship entries identified:
- DNS Association: ip1f11fd03.dynamic.kabel-deutschland.de (multiple entries)
- Same Network: KABEL-DEUTSCHLAND-CUSTOMER-SERVICES-24
No organizational, hostname, or certificate relationships beyond DNS associations.
## Recommended Actions
No specific security actions or firewall rules recommended based on current risk profile. Risk score remains at 0 with no provider or authority score elevation. Standard monitoring practices sufficient.
---
Analyst Notes: The IP demonstrates characteristics of residential mobile endpoint traffic on German Vodafone infrastructure. Geographic inconsistencies warrant continued monitoring but do not indicate malicious activity. Low-risk classification supports defensive monitoring rather than blocking. No immediate threat indicators present.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Kabel Deutschland RIPE |
| ASN | AS3209 |
| Network Name | KABEL-DEUTSCHLAND-CUSTOMER-SERVICES-24 |
| CIDR Block | 31.16.0.0/15 |
| RIR | RIPE |
| Country | DE |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ip1f11fd03.dynamic.kabel-deutschland.de |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ip1f11fd03.dynamic.kabel-deutschland.de |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Mobile |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS3209 |
| Network Prefix | 31.16.0.0/14 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 12% | 2 | 2 |
| routing | 8% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 17% | 2 | 3 |
| reputation | 8% | 1 | 2 |
| geolocation | 12% | 2 | 2 |
| Overall | 11% | 9 | 11 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-04 17:24:21 UTC |
| Last Seen | 2026-08-26 21:44:30 UTC |
| Profile Built | 2026-08-29 07:25:21 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 21 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 31.17.253.3
Who owns the IP address 31.17.253.3?
31.17.253.3 is registered to Kabel Deutschland RIPE. The address falls within the 31.16.0.0/15 network block. Registration is held at RIPE.
Where is 31.17.253.3 located?
Geolocation data places 31.17.253.3 in Bremen, Bremen, Germany. The local time zone is Europe/Berlin. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 31.17.253.3 malicious or safe?
31.17.253.3 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 31.17.253.3?
The reverse DNS (PTR) record for 31.17.253.3 is ip1f11fd03.dynamic.kabel-deutschland.de. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 31.17.253.3 a VPN, proxy, or data center address?
31.17.253.3 is classified as a mobile network based on network ownership and behavioural analysis.